That is not common. If the door "Pops Open"that says there is a preload on the hinge or gasket at the hinge side of the door. If left unattended it could cause metal failure somewhere around the hinge
The trailer should be under warrant if it is a 2016. Call JC and ask for a knowledgeable place closer to home or a factory rep to come out.
WBCCI 12156 AIR 3144 WACHUNG TAC NJ6
2004 Excursion 4x4
1991 34 ft. Excella +220,000 miles, new laminated flooring, new upholstery, new 3200 lbs axles